If the change of environment is ruled out for cats, food change and physical problems can also lead to anorexia. The landlord can try to change the dish, but if he still doesn't eat it, he may be ill. Lactase and lactic acid bacteria tablets can treat indigestion and loss of appetite, which mommy likes to eat. Probiotics, regulating gastrointestinal flora, chronic diseases or acute diseases can also lead to anorexia, such as cat plague, bad cold, nasal branches, respiratory infections and so on. Gastroenteritis, hairball disease, etc. It is also possible. It needs to be judged in combination with other symptoms. You can try the medicine mentioned above first. Probiotic preparations are safe and can be taken according to the dosage. If it doesn't work, send it to a doctor for examination.